diff --git a/tests/core/pistringTest.cpp b/tests/core/pistringTest.cpp
index 742d0783..2c982f4d 100644
--- a/tests/core/pistringTest.cpp
+++ b/tests/core/pistringTest.cpp
@@ -520,3 +520,83 @@ TEST(PIString_Tests, operator_shift_cstring){
 	PIString res = "shift chat";
 	ASSERT_EQ(res, str1);
 }
+
+TEST(PIString_Tests, operator_shift_wchar_t){
+	PIString str1 = "shif";
+	wchar_t str2[] = L"t cc";
+	str1 << str2;
+	PIString res = "shift cc";
+	ASSERT_EQ(res, str1);
+}
+
+TEST(PIString_Tests, operator_shift_int){
+	PIString str1 = "shift ";
+	int numb = -2147483648;
+	str1 << numb;
+	PIString res = "shift -2147483648";
+	ASSERT_EQ(res, str1);
+}
+
+TEST(PIString_Tests, operator_shift_uint){
+	PIString str1 = "shift ";
+	uint numb = 4294967295;
+	str1 << numb;
+	PIString res = "shift 4294967295";
+	ASSERT_EQ(res, str1);
+}
+
+TEST(PIString_Tests, operator_shift_short){
+	PIString str1 = "shift ";
+	short numb = -32768;
+	str1 << numb;
+	PIString res = "shift -32768";
+	ASSERT_EQ(res, str1);
+}
+
+TEST(PIString_Tests, operator_shift_ushort){
+	PIString str1 = "shift ";
+	ushort numb = 65535;
+	str1 << numb;
+	PIString res = "shift 65535";
+	ASSERT_EQ(res, str1);
+}
+
+TEST(PIString_Tests, operator_shift_long){
+	PIString str1 = "shift ";
+	long numb = -2147483648;
+	str1 << numb;
+	PIString res = "shift -2147483648";
+	ASSERT_EQ(res, str1);
+}
+
+TEST(PIString_Tests, operator_shift_ulong){
+	PIString str1 = "shift ";
+	ulong numb = 4294967295;
+	str1 << numb;
+	PIString res = "shift 4294967295";
+	ASSERT_EQ(res, str1);
+}
+
+TEST(PIString_Tests, operator_shift_llong){
+	PIString str1 = "shift ";
+	llong numb = -9223372036854775807;
+	str1 << numb;
+	PIString res = "shift -9223372036854775807";
+	ASSERT_EQ(res, str1);
+}
+
+TEST(PIString_Tests, operator_shift_ullong){
+	PIString str1 = "shift ";
+	ullong numb = 1844674407370955161;
+	str1 << numb;
+	PIString res = "shift 1844674407370955161";
+	ASSERT_EQ(res, str1);
+}
+
+TEST(PIString_Tests, operator_shift_float){
+	PIString str1 = "shift ";
+	float numb = -67.88999939f;
+	str1 << numb;
+	PIString res = "shift -67.88999939";
+	ASSERT_EQ(res, str1);
+}